.b1 {
  width: 100%;
  height: 2rem;
  display: flex;
  flex-wrap: wrap;
  margin-top: .5rem;
}

.b2 {
  width: .7571rem;
  height: .3571rem;
  background-color: whitesmoke;
  border-radius: .2857rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: .0714rem;
  font-size: .1086rem;
}